Acetic Anhydride → 2-Methyl-5-nitrophenyl acetate

HRID 1420894노트

반응식

HRID 1420894 반응식
[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([N+:8]([O-:10])=[O:9])=[CH:4][C:3]=1[OH:11].[OH-].[Na+].[C:14](OC(=O)C)(=[O:16])[CH3:15]>>[C:14]([O:11][C:3]1[CH:4]=[C:5]([N+:8]([O-:10])=[O:9])[CH:6]=[CH:7][C:2]=1[CH3:1])(=[O:16])[CH3:15]

참가 물질

4

반응물 3

HCID 7918Acetic AnhydrideHCID 14798Sodium HydroxideHCID 935762-Methyl-5-nitrophenol

생성물 1

HCID 179342592-Methyl-5-nitrophenyl acetate수율 100%

실험 절차

To a mixture of 2-methyl-5-nitrophenol (2.5 g, 16.3 mmol) and 1M aqueous sodium hydroxide (24.5 ml) was added at ambient temperature acetic anhydride (1.9 ml, 20.3 mmol). The mixture was stirred for 40 minutes, the solid was filtered off and the filtrate extracted with ethyl acetate. The organic layers were combined, washed with an aqueous saturated sodium chloride solution, dried (MgSO4) and evaporated to yield 2-acetoxy-4-nitrotoluene (3.1 g, 100%). A mixture of this material (3.1 g, 15.9 mmol) and 10% palladium-on-charcoal catalyst (0.12 g) in ethyl acetate (50 ml) was stirred at ambient temperature under an atmosphere of hydrogen for 2 hours. The catalyst was filtered off and the filtrate evaporated to give 3-acetoxy-4-methylaniline (2.45 g, 94%).

후처리

  1. filtrationthe solid was filtered off
  2. extractionthe filtrate extracted with ethyl acetate
  3. washwashed with an aqueous saturated sodium chloride solution
  4. dry with materialdried (MgSO4)
  5. customevaporated

출처 및 근거

ORD 기록
ord-7430732b192c464181fb7e576812dc55
출처 데이터셋
uspto-grants-2000_06
특허 번호
US06071921

반응 노트

불러오는 중…